Connection of handles to the tangs of instruments.



R. LANGE. CONNECTION 0P HANDLES TO THE TANGS or INSTRUMENTS.

APPLICATION FILED JUNE 24,1913.

Patented Nov. 24, 1914.

UNITED STATEQ OFFIUE.

ROBERT LANGE, OF.WILMERSDORF, NEAR BERLIN, GERMANY;

CONNECTION OF HANDLES TO THE TANGS 0F INSTRUMENTS.

Specification of Letters Patent.

Application filed June 24, 1913. Serial No. 775,583.

To all whom it may concern Be it known that I, ROBERT LANGE, a citi- I zen of the German Empire, and residing at I As compared with the known constructions of this kind the joint between tang and handle according to my present invention has been modified and perfected in such a manner that instead of fastening the tang.

into the bore in the handle Inow drive wedges at the rear end of the tang into the space unoccupied by the tangin the bore.

A further improvement consists in the bore in the bolster for the tang being made only such a length that it runs into that groove or slot in the bolster which safeguards the blade from turning. a

Two illustrative embodiments of my invention are represented by way of example in the accompanying drawing, wherein Figure 1 is an edge elevation partly in sec tion, showing the first form of joint, and Fig. 2 is a cross-section taken on the line AB in Fig. 1; Figs. 3 and 4 are side and edge elevations, respectively, partly in section, showing the second form of joint, and Fig. 5 is a cross-section taken on the line CD in Fig. 3.

Referring firstly to Figs. 1 and 2,. the blade 1 is rigidly connected to the tang 2. 3 represents a collar surrounding the tang with substantial clearance. Wedges 4, 4 are driven in on both sides of the tang and wedge the tang fast in the collar. It is preferable to fill the crevices between the wedges and the collarwith solder. The collar 3 with the tang attached thereto is then inserted in known manner into the handle and. soldered fast to the latter. The collar 3 then constitutes part of the bolster of the blade 1. Referring now to Figs. 3 to 5, the blade 1 is rigidly connected to a tang 6 extending the entire length of the wooden handle 7.

The upper portion 9 of the bolster or collar Patented Nov. 24., 1914..

8 has a transverse slot 10 which receives the a lower portion of the blade. The lower por- I tion of the bolster, z'. c. at that portion remote from the slot 10, has a cavityll which is open below and serves to receive the wedges 4, 4. The said cavity does not ex- I tend through the bolster 8 but only sufficiently far to meet the slot 10 which is preferably milled in the portion 9 of the bolster at its lower end, and forms a recess 12 of such dimensions that the bolster can be employed as a ferrule for the handle 7. The tang 6 is fastened inthe bolster 8 by means of wedges l, 4 in the same manner as in the embodiment shown in Figs. 1 and 2.

In order to fasten the tang 6 in the wooden handle 7, the former has at its end saw-teeth 13 and the latter has at its corresponding end a recess 1%, in which the tan.

0 c I l 0 b is fastened by pouring in a readily fuslble metallic composition 15 of lead or similar material, so that the saw-teeth 13 on the tang 6 are surrounded and securely held by the metallic composition.

I may, of course, fasten the handle and tang together by some other method, e. g. by screwing or riveting.

1. The combination with a blade having a tang,of a bolster having a cavity of a crosssection larger than that of said tang and surrounding the same with clearance, wedges located in said clearance between said tang and bolster, the thick endsof the wedges being remote from the blade; in metallic composition adapted to melt at a comparatively low temperature, and to fill the remainder of said clearance between said tang and bolster, and a handle supported by said bolster.

2. The combination with a blade havinga tang, of a bolster having a transverse slot at one end for receiving the blade, and a cavity extending from its other end as far as said slot and surrounding said tang, the crosssection of said cavity being larger than that.

The cavity 11 in the bolster 8 is enlarged tang and bolster, the thick ends of said In testimony whereof, I aifix my signature Wedges being remote from the blade, a in the presence of two Witnesses.

metallic eomposition adapted to melt at 2 ROBERT .LANGE. comparatnely 10W temperatule and to fill V 5 the remaining spaces between said tang and v Witnesses:

bolster, and a handle supported by said HENRY HASPER bolster. VVOLDEMAR HAUPT.

Copies ofi this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

